A ambiguous information.

Raintung

When I use gambit2.0.4 to create mesh(a thin fence on the endwall),the following information appears:

bf43046 has skewness 0.951522>0.95 PRISM LAYER GRAWTH HALTED DUE TO QUALITY PROBLEMS! lAST lAYER AUTOMATICALLY REMOVED,LEAVING 0.TGlib received signal SIGSEGV(segmentation violation)ERROR TG_MESH_DOMAIN failed with error code! Tetradedral meshing has failed for the volume.This is usually caused by problems in the face meshes.check the skewnesses of your face meshes and make sure the face mesh sizes are not too large in areas of small gaps. What does the information mean?I have tried my best to modify,but failed! Help,please!Thank you.